As the title sugests, what oil are you using in you YB? and why?

I'm currently using Silkolene Pro S. However this is no longer avalible so been using Fauchs Race 10w50. Why? because thats what this engine has always ran so just never bothered to change or try others.

I've just done a bit of a rebuild so was wondering what is now recomended and why....

 

I asked the guy who inspected my block and crank before I built the engine for my Saff this question. He said to use a 15w40 Semi if you can get it or 10w40 semi if not. Hes owned and built cosworths most of his life, and works as an engine builder.

Im running mine in on 15w40 Mineral oil at the minute, then I will be sticking to his advice and using 10w40 semi. Probably Magnetec.

 

I always just bang semi synth 10/40 in mine and never had any troubles related with the oil I use.

 

I think recently in the yb world the silkolene range is a good choice amongst others and i,ll be using this on my new rebuild when its done. I,ll also keep mineral oil in for longer this time round .

 

Thats what oil I was told to use. He also said that the fully synthetic stuff would just piss past all the seals etc which is one of the reason he sticks with semi-synthetic.

 

I've always used 10/40 in mine but i'm not sure if it the right or wrong thing to do as like many don't know anything about what oil does other than lubricate.

If anyone does have any technical information to what oil to use.

Do you use a different oil to how much power you run?

 

shell or texico fully synthetic 10w40 as its on tap at work and i dont get my oil hot enough id say to worry about it brakeing down as i dont use mine on track or do flat out top speed plus can do as many oil changes as i like so good enough for me

 

try this guy , very helpfull and fast response if you PM/email him . I know the link is about cold starts but worthy of reading
https://passionford.com/forum/techni...opie-oils.html

 

I think the general thinking behind the more expensive fully synthetics is that they will withstand higher temps, better for trackdays or constant hard driving. I think in a road car, you will be hard pushed to generate the kind of oil temps a track day will generate, so a good semi is more than enough for road use.

Secondly, a fully synthetic will stay in grade longer. Ie a good 5w40 fully synthetic will stay as a 5w40 for extended service intervals. I semi-synthetic 10w40 will not stay in grade as long. However, the cost difference would mean you can change a semi-synthetic 2-3 times for the price of some of the fully synthetics.

 

I've allways used mobil 1

 

^^ same here but seen on PF that its not everyones favorite , especially rod and his lab tests with it, iirc mobil 1 15-50 broke down more than others tested , granted its massive power though but still interesting .Haven,t a clue if a less powered engine would have the same results but makes me think its time to try something different in a road car stg1

 

Silkolene have only changed its name to Titan but the oil is the same.

Mark

 

I used silcoline have just changed to Mobil 1 only because you can get it from halfrauds .

 

Pro s 10/50 in mine,great cold start up and sweet as a nut when things get a tad warmer

 

I got a big wing sump now so i want to get the oil right the first time as i'll have to purchase two tubs

 

i use castoral edge sport 10-60. not cheep at £55 for 4l but it is what i was told 2 use or millers.
funny how evary1 recomends silkoline as its so good. it is allso £45 for 5l. might just be that its cheeper and may be ok but who says its the best?
think a mag needs 2 do a test on this subject soon.

 

I have the big wing sump to Chris,it's difficult to get the oil right..lol.
Yep I use Silkolene Pro S 10w 50 fully synthetic,name changed to Fuchs now as mentioned above,same oil though.
Funnily enough I ordered 2x 5 litres today,special offer from the oilman 10 litres for £79 plus £5 odd delivery.
Thanks.Lee.

 

Always used Mobil 1 motorsport 15w50 without problem. It is soon being replaced with a new 10w60 i believe.

 

Q8 F1 10w50 because i get it cheap, never had a breakdown so im guessing it does what its ment to do!

 

on a track car (especially with temps getting high) i'd use the fuchs (silkoline) stuff.
rod's test on the mobil 1 compared to the silkolene says it all really. iirc the mobile one had started to break down and had more fuel contamination after 1 top speed run than the silkolene.

perhaps rod can link us to the thread on the oil test?

also make sure you get the grade right. a sae 60 is VERY thick and could be doing more harm than good, even on a track car. i've found the technical articles on opie oils to be a very good read on the subject.

 

I always used Pro S as there's been a few of these threads over the years, but I changed to Valvoline VR1 last year, I have'nt noticed any change or drop in oil pressure and it is readily available locally and half the price of Pro S.

 

Always used castrol 10w 40 semi then people was going on about 15w 50 mobil 1 so i tried it, Well between me and my mates we call it leak finder cause if theres a small weep it will fucken find it Lol
Back to 10w 40 when its due!

 

odd that a 15w50 would leak more than a 10w40 as its thicker when cold and hot lol

 

What do the big tuners recomend then?...

 

We use Pro s

 

When i rang GGR, Collins etc who used to run touring spec motors they all recommended Mobil 1 to me (a few yrs ago mind).

 

[quote=Ridgey;5410661]Always used Mobil 1 motorsport 15w50 without problem.quote]

Same for me in the racecar - from Halfords with a tradecard it's not too expensive and easily available.

Charlie

 

i use titan pro s 10-50

also had a spell using millers 10-60
both excellent oils

 

and why do u use pro s?? please explain as im interested in noing as i no its the cheepest and u get a extra 1L than most outhers.
iv allwaysed used castoral but at £55 for 4L then post its expensive. but i no it is good and was fine on track also.
but as u lot are 15 miles down the road from me it would be cheeper for me 2 change and go with what u use. just wondering thow why u use it or is it just cost?

 

Millers 10/60 in mine.

 

Mainly because of the high breakdown point, i used mobil 1 and castrol rs in my saff and both dumped oil out the breathers under real hard use, where as pro s did not, it just does a better job of dealing with high temps.

On track using Mobil 1, after a good session out the car would rattle like it had dry lifters, again pro s stopped this issue.

 

Silkolene, because its purple

 

Thanks for that answer, well will have 2 call for some and give it a go..

 

i have been using the 5w40 fully synthetic as reccomended on autodata and ford manual. i have noticed its slightly tappy when driving even though i have fitted new tappets though. does anyone think 10w40 semi synthetic would be better as i have that on tap at work for free lol!!

 

thats what i use in mine but the fully synthetic nice and cheap for free lol mines iver texico or shell never given me any probs as mine isent used on track so the oil dosent get that hot on the road so dont think ill ever get it to the point it will brake down!

 

I've heard so many differences of opinion on what oil to use now i'm bit confused. Im currently running my saff in after a rebuild on 10w40 mineral, as i was told to use a mineral oil for running in, it seems to be alot thinner than i thought it would be and i have a leak comming from the back of the engine somewhere, i don't know if its because the oil is thin and find its way out, but i thought it was the rear main, took the box out and it looked abit damp so changed it, box back in and its still fookin leaking!! but i don't think its the sump as i used a new gasket and silicone...

i always used to use 5w40 fully before as again thats what autodata recommends, but now im not so sure what to use once its run in...??

 

i use valveline race oil..... ive forgot which one but my car doesnt loss any oil pressure even after a session at nurburg ring.....

i get it from the guy who built my engine... james goldstraw @ grace engine developments

 

I used to use Mobil 1 but wad useless was forever having to top up now use millers 10/60 loads better was told by Karl Norris when I took my saff for mapping

 

Rock oil 10w 60 fully at the moment, ive used mobil 1, silkolene, millers ETC in the past and out of all of them, the rock oil gives better oil pressure, and doesn't burn as fast! and its £13 a tub as my mate get it through work.

 

Pro rs for me.Ive used it for a few years now.Gonna be doing a track day in mine this year so it will be getting the same oil again.